K 2500 Yukon 4WD V8-6.0L VIN U (2000)
Repairs and Inspections Required After a Collision: Service and Repair
Air Bag System
Accident With Frontal Air Bag Deployment
Component Replacement and Inspections
After a collision involving frontal air bag deployment, replace the following components. If you detect any damage to the mounting points or mounting
hardware, repair or replace the mounting points and mounting hardware as needed.
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Inflatable restraint front end discriminating sensors.
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Inflatable restraint IP (inflator) module.
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Inflatable restraint Sensing and Diagnostic Module (SDM).
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Inflatable restraint side impact (inflator) module if deployed.
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Inflatable restraint steering wheel (inflator) module.
After a collision involving air bag deployment, inspect the inflatable restraint steering wheel module coil and the coil wiring pigtail for melting,
scorching, or other damage due to excessive heat. Perform this component inspection in addition to the inspections indicated above in Accident With or
Without Air Bag Deployment. If you detect any damage, replace the component. If you detect any damage to the mounting points or mounting hardware,
repair the component or replace the hardware as needed.
Accident With Side Air Bag Deployment
Component Replacement and Inspections
After a collision involving side air bag deployment, replace the following components. If you detect any damage to the mounting points or mounting
hardware, repair or replace the mounting points and mounting hardware as needed.
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Inflatable restraint Sensing and Diagnostic Module (SDM).
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Inflatable restraint side impact (inflator) module, on the side of impact.
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Inflatable restraint Side Impact Sensor (SIS), on the side of impact.
Perform the inspections indicated above in Accident With or Without Air Bag Deployment. If you detect any damage, replace the component. If you
detect any damage to the mounting points or mounting hardware, repair the component or replace the hardware as needed.
Accident With/Without Air Bag Deployment
CAUTION:
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Proper operation of the Supplemental Inflatable Restraint (SIR) sensing system requires that any repairs to the vehicle structure return
the vehicle structure to the original production configuration. Not properly repairing the vehicle structure could cause non-deployment of
the air bag(s) in a frontal collision or deployment of the air bag(s) for conditions less severe than intended.
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Proper operation of the Supplemental Inflatable Restraint (SIR) sensing system requires that any repairs to the vehicle structure return
the vehicle structure to the original production configuration. Not properly repairing the vehicle structure could cause non-deployment of
the side impact air bag(s) in a side impact collision or deployment of the side impact air bag(s) for conditions less severe than intended.
Component Replacement and Inspections
After any collision, inspect the following components as indicated. If you detect any damage, replace the component. If you detect any damage to the
mounting points or mounting hardware, repair the component or replace the hardware as needed.
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Steering column - Perform the steering column accident damage checking procedures. Refer to Steering Column Accident Damage Inspection -
Off Vehicle in Steering Wheel and Column - Tilt.
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I/P knee Bolsters and Mounting Points-Inspect the knee bolsters for bending. twisting, buckling, or any other type of damage.
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I/P brackets, braces, etc.- Inspect for bending, twisting, buckling, or any other type of damage.
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Seat Belts - Perform the seat belt operational and functional checks. Refer to Operational and Functional Checks in Seal Belts.
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Seats and Seat Mounting Points - Inspect for bending, twisting, buckling, or any other type of damage.
Sensor Replacement Guidelines
The SIR sensor replacement policy requires replacing sensors in the area of accident damage. The area of accident damage is defined as the portion of
the vehicle which is crushed, bent, or damaged due to a collision. For example, a moderate collision where the front of the vehicle impacts a tree. If the
vehicle has an SIR sensor mounted forward of the radiator, it must be replaced.
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Replace the sensor whether or not the air bags have deployed.
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Replace the sensor even if it appears to be undamaged.
Sensor damage which is not visible, such as slight bending of the mounting bracket or cuts in the wire insulation, can cause improper operation of the
SIR sensing system. Do not try to determine whether the sensor is undamaged, replace the sensor. Also, if you follow a Diagnostic Trouble Code (DTC)
table and a malfunctioning sensor is indicated, replace the sensor.
